.section {
  padding: 10px;
  margin: 5px;
  border-radius: 5px;
  border: 1px solid #aaa;
  color: #000;
  h1 {
    margin-top: 0;
    font-size: 22px;
  }
  h2 {
    margin-top: 0;
    font-size: 20px;
  }
  h3 {
    margin-top: 0;
    font-size: 18px;
  }
  h4 {
    margin-top: 0;
    font-size: 16px;
  }
}
